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nios2: drop definition of PGD_ORDER

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This is the order of the page table allocation, not the order of a PGD. 
Since its always hardwired to 0, simply drop it.

Link: https://lkml.kernel.org/r/20220703141203.147893-9-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Guo Ren <guoren@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Xuerui Wang <kernel@xen0n.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Mike Rapoport 2022-07-03 17:11:57 +03:00 committed by akpm
parent bf0dc119c5
commit a6714e720b
3 changed files with 3 additions and 6 deletions
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4
arch/nios2/include/asm/pgtable.h
View File

@ -52,9 +52,7 @@ struct mm_struct;
#define PAGE_COPY MKP(0, 0, 1)
#define PGD_ORDER 0
#define PTRS_PER_PGD ((PAGE_SIZE << PGD_ORDER) / sizeof(pgd_t))
#define PTRS_PER_PGD (PAGE_SIZE / sizeof(pgd_t))
#define PTRS_PER_PTE (PAGE_SIZE / sizeof(pte_t))
#define USER_PTRS_PER_PGD \

3
arch/nios2/mm/init.c
View File

@ -78,8 +78,7 @@ void __init mmu_init(void)
flush_tlb_all();
}
#define __page_aligned(order) __aligned(PAGE_SIZE << (order))
pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned(PGD_ORDER);
pgd_t swapper_pg_dir[PTRS_PER_PGD] __aligned(PAGE_SIZE);
pte_t invalid_pte_table[PTRS_PER_PTE] __aligned(PAGE_SIZE);
static struct page *kuser_page[1];

2
arch/nios2/mm/pgtable.c
View File

@ -54,7 +54,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *ret, *init;
ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
ret = (pgd_t *) __get_free_page(GFP_KERNEL);
if (ret) {
init = pgd_offset(&init_mm, 0UL);
pgd_init(ret);